package handlers

import (
	"encoding/json"
	"github.com/gin-gonic/gin"
	"red-book-mgr/cache"
	"red-book-mgr/models"
	"red-book-mgr/pkg"
	"strconv"
	"time"
)

func Login(c *gin.Context) {
	username := c.PostForm("username")
	password := c.PostForm("password")
	if username == "" || password == "" {
		c.JSON(200, gin.H{
			"code": 500,
			"msg":  "用户名和密码不能为空",
		})
		return
	}
	user := models.User{
		Username: username,
		Password: pkg.Md5Str(password),
	}
	err := models.DB.Create(&user).Debug().Error
	if err != nil {
		c.JSON(200, gin.H{
			"code": 500,
			"msg":  "登录失败",
		})
		return
	}
	c.JSON(200, gin.H{
		"code": 200,
		"msg":  "登录成功",
	})
}

func Add(c *gin.Context) {
	title := c.PostForm("title")
	content := c.PostForm("content")
	author := c.PostForm("author")
	if title == "" || content == "" || author == "" {
		c.JSON(200, gin.H{
			"code": 500,
			"msg":  "字段不能为空",
		})
		return
	}
	data := models.Article{
		Title:   title,
		Content: content,
		Author:  author,
	}
	err := models.DB.Create(&data).Debug().Error
	if err != nil {
		c.JSON(200, gin.H{
			"code": 500,
			"msg":  "添加失败",
		})
		return
	}
	//设置缓存
	redis_key := "article_id" + strconv.Itoa(int(data.ID))
	var article models.Article
	models.DB.Where("id = ?", data.ID).First(&article)
	jsonData, _ := json.Marshal(article)
	cache.Rdb.Set(cache.Ctx, redis_key, jsonData, time.Hour*2)

	c.JSON(200, gin.H{
		"code": 200,
		"msg":  "添加成功",
	})
	return
}

func Detail(c *gin.Context) {
	id := c.Query("id")
	var article models.Article

	redis_key := "detail" + id
	cacheData, _ := cache.Rdb.Get(cache.Ctx, redis_key).Result()
	if cacheData == "" {
		models.DB.Where("id = ?", id).First(&article)

		jsonData, _ := json.Marshal(article)

		cache.Rdb.Set(cache.Ctx, redis_key, jsonData, time.Hour*2)
	} else {
		json.Unmarshal([]byte(cacheData), &article)
	}
	c.JSON(200, gin.H{
		"code": 500,
		"msg":  "详情查询成功",
		"data": article,
	})
	return
}

func Del(c *gin.Context) {
	id := c.Query("id")
	err := models.DB.Where("id =?", id).Delete(&models.Article{}).Error
	if err != nil {
		c.JSON(200, gin.H{
			"code": 500,
			"msg":  "删除失败",
		})
		return
	}

	redis_key := "del" + id
	cache.Rdb.Del(cache.Ctx, redis_key)
	c.JSON(200, gin.H{
		"code": 200,
		"msg":  "删除成功",
	})
	return
}

func List(c *gin.Context) {
	var article []models.Article

	redis_key := "list"
	cacheData, _ := cache.Rdb.Get(cache.Ctx, redis_key).Result()
	if cacheData == "" {
		models.DB.Find(&article)
		jsonData, _ := json.Marshal(article)
		cache.Rdb.Set(cache.Ctx, redis_key, jsonData, time.Hour*2)
	} else {
		json.Unmarshal([]byte(cacheData), &article)
	}
	c.JSON(200, gin.H{
		"code": 200,
		"msg":  "查询成功",
		"data": article,
	})
	return
}
